ORCID Profile
0000-0001-9741-4397
Current Organisations
UNSW Sydney
,
National Astronomical Observatories, Chinese Academy of Sciences
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
Publisher: Elsevier BV
Date: 03-2023
Publisher: Royal Society of Chemistry (RSC)
Date: 2022
DOI: 10.1039/D2EW00310D
Abstract: To date, only a handful of studies have described application of organic materials as carriers (nuclei) in the aerobic granular sludge (AGS) system, compared to inorganic materials.
Publisher: Springer Science and Business Media LLC
Date: 15-12-2021
Publisher: IWA Publishing
Date: 10-08-2022
DOI: 10.2166/WST.2022.245
Abstract: As an emerging environment functional material, biochar has become a research hotspot in environmental fields because of its excellent ecological and environmental benefits. Recently, biochar has been used as an innovative soil ameliorant in bioretention systems (BRS) to effectively enhance pollutant removal efficiency for BRS. This paper summarizes and evaluates the performance and involved mechanisms of biochar amendment in BRS with respect to the removal of nutrients (TN (34–47.55%) and PO43--P (47–99.8%)), heavy metals (25–100%), pathogenic microorganisms (Escherichia coli (30–98%)), and organic contaminants (77.2–100%). For biochar adsorption, the pseudo-second-order and Langmuir models are the most suitable kinetic and isothermal adsorption models, respectively. Furthermore, we analyzed and elucidated some factors that influence the pollutant removal performance of biochar-amended BRS, such as the types of biochar, the preparation process and physicochemical properties of biochar, the aging of biochar, the chemical modification of biochar, and the hydraulic loading, inflow concentration and drying–rewetting alternation of biochar-amended BRS. The high potential for recycling spent biochar in BRS as a soil ameliorant is proposed. Collectively, biochar can be used as an improved medium in BRS. This review provides a foundation for biochar selection in biochar-amended BRS. Future research and practical applications of biochar-amended BRS should focus on the long-term stability of treatment performances under field conditions, chemical modification with co-impregnated nanomaterials in biochar surface, and the durability, aging, and possible negative effects of biochar.
Publisher: American Astronomical Society
Date: 18-05-2020
Publisher: Elsevier BV
Date: 12-2023
Publisher: Springer Science and Business Media LLC
Date: 13-10-2021
DOI: 10.1038/S41586-021-03878-5
Abstract: The event rate, energy distribution and time-domain behaviour of repeating fast radio bursts (FRBs) contain essential information regarding their physical nature and central engine, which are as yet unknown
Publisher: Springer Science and Business Media LLC
Date: 10-11-2022
Publisher: IWA Publishing
Date: 28-07-2022
DOI: 10.2166/WST.2022.228
Abstract: In this study, we evaluated the relative abundance of nitrogen functional genes (amoA, nirK and nirS) involved in ammonia oxidation and denitrification bacteria in laboratory-scale bioretention columns in response to environmental factors (e.g., moisture content, pH, soil organic matter, soil nitrogen) under different antecedent dry days (ADDs). We observed a decrease tendency of the relative abundance of ammonia-oxidizing bacteria at first and then increased when increasing ADDs from 1 to 22 day, while the relative abundance of denitrifying bacteria showed a downward trend. The abundance of bacteria gene amoA was positively associated with soil ammonia nitrogen concentration (r2 = 0.389, p & 0.05) and soil organic matter concentration (r2 = 0.334, p & 0.05), while the abundance of bacteria gene nirS was positively correlated with soil ammonia nitrogen (r2 = 0.730, p & 0.01), soil organic matter (r2 = 0.901, p & 0.01) and soil total nitrogen (r2 = 0.779, p & 0.01). Furthermore, gene counts for bacteria gene nirS were correlated negatively with plant root length (r2 = 0.364, p & 0.05) and plant biomass (r2 = 0.381, p & 0.05). Taken together, these results suggest that both nitrification and denitrification can occur in bioretention systems, which can be affected by environmental factors.
Publisher: Elsevier BV
Date: 07-2023
Publisher: American Association for the Advancement of Science (AAAS)
Date: 18-03-2022
Abstract: The polarization of fast radio bursts (FRBs), which are bright astronomical transient phenomena, contains information about their environments. Using wide-band observations with two telescopes, we report polarization measurements of five repeating FRBs and find a trend of lower polarization at lower frequencies. This behavior is modeled as multipath scattering, characterized by a single parameter, σ RM , the rotation measure (RM) scatter. Sources with higher σ RM have higher RM magnitude and scattering time scales. The two sources with the highest σ RM , FRB 20121102A and FRB 20190520B, are associated with compact persistent radio sources. These properties indicate a complex environment near the repeating FRBs, such as a supernova remnant or a pulsar wind nebula, consistent with their having arisen from young stellar populations.
Publisher: American Astronomical Society
Date: 03-2021
Abstract: We report three new FRBs discovered by the Five-hundred-meter Aperture Spherical radio Telescope (FAST), namely FRB 181017.J0036+11, FRB 181118, and FRB 181130, through the Commensal Radio Astronomy FAST Survey (CRAFTS). Together with FRB 181123, which was reported earlier, all four FAST-discovered FRBs share the same characteristics of low fluence (≤0.2 Jy ms) and high dispersion measure (DM, pc cm −3 ), consistent with the anticorrelation between DM and fluence of the entire FRB population. FRB 181118 and FRB 181130 exhibit band-limited features. FRB 181130 is prominently scattered ( τ s ≃ 8 ms) at 1.25 GHz. FRB 181017.J0036+11 has full-bandwidth emission with a fluence of 0.042 Jy ms, which is one of the faintest FRB sources detected so far. CRAFTS has started to build a new s le of FRBs that fills the region for more distant and fainter FRBs in the fluence–DM E diagram, previously out of reach of other surveys. The implied all-sky event rate of FRBs is 1.24 − 0.90 + 1.94 × 10 5 sky −1 day −1 at the 95% confidence interval above 0.0146 Jy ms. We also demonstrate here that the probability density function of CRAFTS FRB detections is sensitive to the assumed intrinsic FRB luminosity function and cosmological evolution, which may be further constrained with more discoveries.
Publisher: Springer Science and Business Media LLC
Date: 21-09-2022
DOI: 10.1038/S41586-022-05071-8
Abstract: Fast radio bursts (FRBs) are highly dispersed, millisecond-duration radio bursts
Publisher: Springer Science and Business Media LLC
Date: 28-10-2020
Publisher: Research Square Platform LLC
Date: 16-11-2021
DOI: 10.21203/RS.3.RS-1059119/V1
Abstract: Fast radio bursts (FRBs) are highly dispersed radio bursts prevailing in the universe. The recent detection of FRB~200428 from a Galactic magnetar suggested that at least some FRBs originate from magnetars, but it is unclear whether the majority of cosmological FRBs, especially the actively repeating ones, are produced from the magnetar channel. Here we report the detection of 1863 polarised bursts from the repeating source FRB~20201124A during a dedicated radio observational c aign of Five-hundred-meter Aperture Spherical radio Telescope (FAST). The large s le of radio bursts detected in 88 hr over 54 days indicate a significant, irregular, short-time variation of the Faraday rotation measure (RM) of the source during the first 36 days, followed by a constant RM during the later 18 days. Significant circular polarisation up to 75\\% was observed in a good fraction of bursts. Evidence suggests that some low-level circular polarisation originates from the conversion from linear polarisation during the propagation of the radio waves, but an intrinsic radiation mechanism is required to produce the higher degree of circular polarisation. All of these features provide evidence for a more complicated, dynamically evolving, magnetised immediate environment around this FRB source. Its host galaxy was previously known. Our optical observations reveal that it is a Milky-Way-sized, metal-rich, barred-spiral galaxy at redshift z=0.09795+-0.00003, with the FRB residing in a low stellar density, interarm region at an intermediate galactocentric distance, an environment not directly expected for a young magnetar formed during an extreme explosion of a massive star.
Location: China
No related grants have been discovered for Yinghui Tang.